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74371 (1998 XG1)
Classification: Main-belt Asteroid          SPK-ID: 2074371
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1149985229297781 4.5965e-08  
a 3.001966577467639 2.2815e-08 au
q 2.656744855174299 1.3675e-07 au
i 10.80626907689233 7.9418e-06 deg
node 232.4288001894588 3.2403e-05 deg
peri 237.2702881334485 4.9582e-05 deg
M 4.848554258718528 3.6102e-05 deg
tp 2458974.913141631274
(2020-May-05.41314163)
0.0001905 TDB
period 1899.797036648155
5.20
2.1658e-05
5.93e-08
d
yr
n .1894939264855125 2.1602e-09 deg/d
Q 3.347188299760978 2.5438e-08 au
  Orbit Determination Parameters
   # obs. used (total)      563  
   data-arc span      7743 days (21.20 yr)  
   first obs. used      1998-11-14  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53956  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:14:50  

Additional Information
 Earth MOID = 1.6918 au 
 Jupiter MOID = 1.93314 au 
 T_jup = 3.216 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO351368  
diameter diameter 4.017 km 0.257 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.144   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74371 (1998 XG1)          Discovered 1998-Dec-07 by ODAS at Caussols
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 XG1 = 2000 EH21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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